Improvement in device for holding- doors open



avi-mimi g tait/ Meeeaeww WILLIAM W. GREEN', JR., or JANESVILLE,TWIs'coNsrN,v AssIGNoR ,I

TO HIMSELF AND E. BROWN,V0F SAME PLACE. i Letters Patent No. 84,352,dated Neue/mbar 24,118.68.

IMPROVEMENT. IN-DEVICE FOR HOLDING- DOORS OPEN.

The Schedule referred to in these Letters P atent and making part of thesame.

To all 'whom vit may conce/rn.- p

. Be it known that I, WILLIAM W. GREEN, Jr., of Janesville, in' thecounty of Rock, and State of \Viscousin, havevinvented a new andimproved Device for Holding Doors Open and I do hereby decla-re that thefollowing is a full, clear, 'and exact description thereof, which willenable those skilled in the art to make and use the same, referencebeing had to the accompanying drawing,- forming part of thisspecication, in which tlegdrawiig represents a central transversesection of my invention, the object of which is to prevent the doorr theknob of the lock from marking the wall by striking against it when thedoor is swung open, and also to catch automatically, and hold the dooropen.

' It consists in the construction of a spring-catch, passing through aknob affixed to the washboard or surbase of a wall in any suitableposition, and adapted to secure the knob to the wash-board, and tocatch'into a socket-plate affixed to the bottom of the door, as will behereinafter more fully described.

In the drawings- A is the knob, aixed to the surbase or washboard B bymeans of a screw-thread in the Ashank aof the kn'ob.

The shank a biflncates near its outer or ee end, and thus forms twobranches or spring-tines, b -b, each having a head which Atapers tofront and rear, and the two heads, when sprung together, form a diamondor spear-shaped termination, which catches yin the socket-y n platecovering a socket or recess, D; inthe door O.

The tines b b are located in a hole or recess, h, inthe knob, and theheaded-cl are presented beyond the said recess to catch in the plate ee, as shown.

A rubber washer, fj; or other elastic device is afiixed on the end ofthe knob, to prevent any concussion of the door.

` y A small block, having a cavity, D, and the plate ee,

to t within the plate e attached to the door, and with a shoulder at theinner end of the bifurcation, by whichf the knob A is held to thevwash-board B, as constructed and shown.

' WILLIAM W. GREEN, JR.

\Vitnesses:

JOHN WINANs,

EMERY BROWN.

